CN103075105B - Cyclone jet drill bit - Google Patents
Cyclone jet drill bit Download PDFInfo
- Publication number
- CN103075105B CN103075105B CN201310037786.XA CN201310037786A CN103075105B CN 103075105 B CN103075105 B CN 103075105B CN 201310037786 A CN201310037786 A CN 201310037786A CN 103075105 B CN103075105 B CN 103075105B
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- Prior art keywords
- bit
- cutter tip
- bit body
- cavity
- return air
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Links
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 27
- 239000007924 injection Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a cyclone jet drill bit, which comprises a drill bit body provided with a cavity, wherein a sampling port communicated with the cavity is arranged in the middle of the end part of the drill bit body, a cutting tool bit for drilling and sampling is arranged at the end part of the drill bit body, a cyclone jet hole communicated with the cavity is arranged on the wall of the drill bit body close to the cutting tool bit, and the central line of the cyclone jet hole and the axis of the drill bit body are staggered in a space.
Description
Technical field
The invention belongs to drill bit field, specifically relate to a kind of cyclone type jet bit.
Background technology
Current coal mine gas hazard management based on regional control, Local provisions is supplementary, the Fast Measurement technology of region Gas explosion burns becomes urgent problem, and thus deep hole sampling is the matter of utmost importance needing to solve; The sampling mode of existing deep layer gas mainly contains: basket sampling, Auger drilling aperture connect coal dust, the sampling of pressure wind injection etc., and depth selection is at about 30 meters generally at about 30 minutes its sample time in sampling process for these sampling methods.Its main cause is drill bit, sample rate is slow and depth selection is shallow to use this normal drill bit to exist, cause sample time in actual sampling work long and can not the problem of spot sampling, seriously hinder the production effect of seam mining, govern the development of productivity;
For above-mentioned deficiency, need to research and develop a kind of new deep hole gas chisel bit, can sample fast and accurately, and sample time, raising depth selection, raising colliery sampling operating efficiency and safety can be saved, reduce Gas Disaster accident.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of cyclone type jet bit, this drill bit makes ickings be pressed into sampling passage by the compressed air ejecting rotation, reach and sample fast and accurately, and sample time, raising depth selection, raising colliery sampling operating efficiency and safety can be saved, reduce Gas Disaster accident.
For achieving the above object, cyclone type jet bit of the present invention comprises the bit body being provided with cavity, the sample tap with this cavity connects is provided with in the middle of described bit body end, described bit body end is provided with the cutter tip for creeping into and sampling, described drill bit body wall is provided with the swirl injection hole with cavity connects near cutter tip place, described swirl injection centerline hole and bit body axis interlaced in space.
Further, described swirl injection centerline hole and bit body drilling direction form the angle of 5 ° ~ 60 ° and cutter tip cutting face forms 30 ° ~ 80 ° angles.
Further, described cutter tip is set to 3 or 4 and is uniformly distributed, and described swirl injection centerline hole extended line is through the sidewall of cutter tip.
Further, the sidewall of described cutter tip is set to concave curvatures.
Further, described bit body internal cavity place is provided with annular ejector, forms annular cavity between annular ejector and bit body inwall.
Further, described annular ejector comprises the first body be threaded successively, middle body and the second body, described first body end is provided with the toroidal charging aperture be communicated with sample tap, the end that described middle body is connected with the first body is provided with the toroidal return air chamber be communicated with charging aperture, described second body is provided with the discharging opening be communicated with toroidal return air chamber, described first body is provided with the return air spray-hole being communicated with annular cavity and return air chamber.
Further, described first body end outer wall is connected with bit body thread seal, and described second body end is provided with seal groove and is located at the sealing ring in sealing groove.
Beneficial effect of the present invention is:
1. cyclone type jet bit of the present invention is by being provided with swirl injection hole, the compressed air that rotation is ejected in this swirl injection hole makes ickings be pressed into sample tap, reach and sample fast and accurately, and sample time, raising depth selection, raising colliery sampling operating efficiency and safety can be saved, reduce Gas Disaster accident;
2. cyclone type jet bit of the present invention is by being provided with annular ejector, producing suction effect, can improve sample rate by this annular ejector when sampling;
3. cyclone type jet bit of the present invention is by after arranging swirl injection hole and annular ejector, and this drill bit depth selection can reach more than 100 meters, and sample rate can bring up to 500g/min, reduces to about 2 minutes sample time.
Accompanying drawing explanation
Fig. 1 is the sectional view of cyclone type jet bit of the present invention;
Fig. 2 is the sectional view of annular ejector in cyclone type jet bit of the present invention.
Reference numeral: 1-bit body; 2-cutter tip; 3-annular ejector; 4-swirl injection hole; 5-sample tap; 6-toroidal cavity; 7-return air spray-hole; 8-first pipeline section; Pipeline section in the middle of 9-; 10-second pipeline section; 11-charging aperture; 12-discharging opening; 13-return air chamber; 14-sealing ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Be illustrated in figure 1 the sectional view of cyclone type jet bit of the present invention, cyclone type jet bit of the present invention comprises the bit body 1 being provided with cavity, the sample tap 5 with this cavity connects is provided with in the middle of described bit body 1 end, described bit body 1 end is provided with the cutter tip 2 for creeping into and sampling, described bit body 1 wall is provided with the swirl injection hole 4 with cavity connects near cutter tip 2 place, described swirl injection hole 4 center line and bit body 1 axis interlaced in space, the present embodiment cyclone type jet bit is by coordinating the equipment use such as double-wall drill pipe and rig.
When normally creeping into, rig drives cyclone type jet bit to creep into forward, the broken coal petrography of cutter tip 2, and swirl injection hole 4 and sample tap 5 spray compressed air simultaneously to carry out creeping into deslagging, and realize boring, wherein compressed air is ejected in swirl injection hole 4 is rotation status.
During sampling, the compressed air ejecting rotation is continued in swirl injection hole 4, sample tap 5 stops spraying compressed air and adopting the state of bleeding, ickings under broken by cutter tip 2 sprays under the swabbing action of compressed-air actuated cyclonic action and sample tap 5 in swirl injection hole 4 and is pressed in sample tap 5, and is delivered to aperture fast by double-wall drill pipe.
Further, described swirl injection centerline hole 4 and bit body 1 drilling direction form the angle of 5 ° ~ 60 ° and cutter tip 2 cutting face forms 30 ° ~ 80 ° angles.
Further, described cutter tip 2 is set to 3 or 4 and is uniformly distributed, described swirl injection hole 4 center line extended line is through the sidewall of cutter tip 2, the sidewall surfaces of described cutter tip 2 is set to concave curvatures, the preferred described swirl injection hole 4 of the present embodiment is set to 4, by swirl injection hole 4 eject rotation compressed air under the effect of the sidewall of cutter tip 2, the scope of rotation is larger, by more ickings press-in to sample tap 5.
Further, described bit body 1 internal cavity place is provided with annular ejector 3, annular cavity 6 is formed between annular ejector 3 and bit body 1 inwall, compressed air is by being ejected by swirl injection hole 4 after annular cavity 6, by being provided with annular ejector 3, the ickings being pressed into sample tap 5 is inhaled in annular ejector 3 passage, in the present embodiment, annular ejector 3 can produce better suction effect when sampling, improve sample rate, and gas flow optimized and solid-gas ratio control in double-wall drill pipe can be realized by the combination of swirl injection hole 4 and annular ejector 3, realize the object of coal seam fast sampling, existing basket of comparing samples, Auger drilling aperture connects coal dust, conventional pressure wind injection sampling etc., this structure is simple and sampling craft is simple.
Be illustrated in figure 2 the sectional view of annular ejector in cyclone type jet bit of the present invention, described annular ejector 3 comprises the first body 8 be threaded successively, middle body 9 and the second body 10, described first body 8 end is provided with the toroidal charging aperture 11 be communicated with sample tap 5, the end that described middle body 9 is connected with the first body 8 is provided with the toroidal return air chamber 13 be communicated with charging aperture 11, described second body 10 is provided with the discharging opening 12 be communicated with toroidal return air chamber 13, described first body 8 wall is provided with the return air spray-hole 7 being communicated with annular cavity 6 and return air chamber 13, preferred return air spray-hole 7 is uniform to be arranged on the first body 8 wall, described first body 8 end outer wall is connected with bit body 1 thread seal, described second body end is provided with seal groove and is located at the sealing ring 14 in sealing groove, when feeding, a compressed air part is by being ejected by swirl injection hole 4 after annular cavity 6, another part enters toroidal return air chamber 12 by return air spray-hole 7, under compressed air and the effect of toroidal return air chamber 13, annular ejector 3 charging aperture 11 is made to produce suction effect, thus coal dust is entered in double-wall drill pipe by discharging opening 12 manage, and be delivered to aperture, realize fast sampling, the present embodiment can regulate reasonable solid-gas ratio by the return air spray-hole 7 of annular ejector 3.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (4)
1. a cyclone type jet bit, comprise the bit body being provided with cavity, the sample tap with this cavity connects is provided with in the middle of described bit body end, described bit body end is provided with the cutter tip for creeping into and sampling, it is characterized in that: described drill bit body wall is provided with the swirl injection hole with cavity connects near cutter tip place, described swirl injection centerline hole and bit body axis interlaced in space; Described swirl injection centerline hole and bit body drilling direction form 5 ° ~ 60 ° angles and cutter tip cutting face forms 30 ° ~ 80 ° angles;
Described bit body internal cavity place is provided with annular ejector;
Described annular ejector comprises the first body be threaded successively, middle body and the second body, described first body end is provided with the toroidal charging aperture be communicated with sample tap, the end that described middle body is connected with the first body is provided with the toroidal return air chamber be communicated with charging aperture, described second body is provided with the discharging opening be communicated with toroidal return air chamber, described first body is provided with the return air spray-hole being communicated with annular cavity and return air chamber.
2. cyclone type jet bit as claimed in claim 1, is characterized in that: described cutter tip is set to 3 or 4 and is uniformly distributed, and described swirl injection centerline hole extended line is through the sidewall of cutter tip.
3. cyclone type jet bit as claimed in claim 1, is characterized in that: the sidewall of described cutter tip is set to concave curvatures.
4. cyclone type jet bit as claimed in claim 1, is characterized in that: described first body end outer wall is connected with bit body thread seal, and described second body end is provided with seal groove and is located at the sealing ring in sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037786.XA CN103075105B (en) | 2013-01-31 | 2013-01-31 | Cyclone jet drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037786.XA CN103075105B (en) | 2013-01-31 | 2013-01-31 | Cyclone jet drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103075105A CN103075105A (en) | 2013-05-01 |
| CN103075105B true CN103075105B (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310037786.XA Active CN103075105B (en) | 2013-01-31 | 2013-01-31 | Cyclone jet drill bit |
Country Status (1)
| Country | Link |
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| CN (1) | CN103075105B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453721A (en) * | 2014-12-17 | 2015-03-25 | 中煤科工集团重庆研究院有限公司 | Anti-hole-collapse reverse circulation sampling drill bit |
| CN108386135B (en) * | 2018-02-26 | 2019-04-30 | 中煤科工集团重庆研究院有限公司 | Fishing type drill bit special for casing drilling |
| CN109490009B (en) * | 2018-10-09 | 2021-04-20 | 魏明然 | Acquisition system for geological environment survey |
| CN109470509A (en) * | 2018-10-25 | 2019-03-15 | 四川大学 | A kind of sampler of Accurate Determining coal seam gas-bearing capacity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963043A (en) * | 2010-10-19 | 2011-02-02 | 煤炭科学研究总院重庆研究院 | Positive pressure jet spiral sampling drill |
| CN101975060A (en) * | 2010-10-19 | 2011-02-16 | 煤炭科学研究总院重庆研究院 | Rapid sampling system of deep hole gas |
| CN102798548A (en) * | 2012-08-16 | 2012-11-28 | 中煤科工集团重庆研究院 | Positive and negative pressure combined plug flow fixed-point sampling device |
| CN203050511U (en) * | 2013-01-31 | 2013-07-10 | 中煤科工集团重庆研究院 | Whirlwind type jet drill bit |
-
2013
- 2013-01-31 CN CN201310037786.XA patent/CN103075105B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963043A (en) * | 2010-10-19 | 2011-02-02 | 煤炭科学研究总院重庆研究院 | Positive pressure jet spiral sampling drill |
| CN101975060A (en) * | 2010-10-19 | 2011-02-16 | 煤炭科学研究总院重庆研究院 | Rapid sampling system of deep hole gas |
| CN102798548A (en) * | 2012-08-16 | 2012-11-28 | 中煤科工集团重庆研究院 | Positive and negative pressure combined plug flow fixed-point sampling device |
| CN203050511U (en) * | 2013-01-31 | 2013-07-10 | 中煤科工集团重庆研究院 | Whirlwind type jet drill bit |
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| Publication number | Publication date |
|---|---|
| CN103075105A (en) | 2013-05-01 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Applicant after: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. Address before: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Applicant before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Applicant after: CCTEG CHONGQING RESEARCH INSTITUTE Co.,Ltd. Address before: 400039 Chongqing Jiulongpo Branch City Road No. 6 Applicant before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
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| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |